JP3310369B2 - Liquid container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid container, and more particularly to a liquid container suitable as a processing liquid container used for developing a photosensitive material.

[0002]

2. Description of the Related Art Conventionally, high-density polyethylene (HD)
Rigidity by blow molding or injection blow molding using a one-layer material such as PE), polyvinyl chloride (PVC), polyethylene terephthalate (PET), or a multilayer material such as nylon / polyethylene (NY / PE). Liquid containers are used. This makes it easy for the user to use by emphasizing the independence of the container, the suitability for filling the liquid in the factory, or the suitability for injecting the liquid into the processing tank, and further restricts the transport of dangerous goods for export (un regulation, ie, dropping at -18 ° C). This is to ensure sufficient strength to cope with laws and regulations that take strength into account) and regulations on the transport of poisonous substances.

[0003]

However, in the above-described conventional rigid liquid container, the shape of the container is maintained even after the contents are discharged and emptied due to the rigidity. Therefore, there is a problem that the user is less likely to crush when discarding the product after use, and is relatively bulky.

The present invention has been made in view of the above circumstances, and has as its object to reduce the volume of a liquid after use, that is, to reduce the required space without impairing the user's ease of use. It is to provide a container.

[0005]

SUMMARY OF THE INVENTION A liquid container according to the present invention has a container body, and a hard mouth projecting upward from the container body, and a lid member engaged with the mouth. Wherein the container body extends from the mouth to the bottom of the container body and the lower ends of each other
Is composed of a plurality of hard ridges formed at a predetermined distance apart from each other and another portion having flexibility made of a different material from the hard ridges, and the mouth and the container body are integrally formed by blow molding. A liquid container characterized by being formed in a uniform manner.

[0006]

According to the liquid container of the first aspect, the lower end portions of the container body extend from the mouth to the bottom of the container body.
Has a plurality of hard ridges formed at a predetermined distance, the rigid ridges ensure the independence of the container itself, and since the mouth is hard, it is suitable for liquid filling at a factory, The workability at the time is not impaired. When the container is discarded after the injection, the volume of the container can be easily reduced by crushing the other part of the container body having flexibility by breaking the hard strip part of the container body. In the state after the formation, it is difficult to return to the original shape due to the deformation of the hard strip.

[0007]

1 to 3 show a first embodiment of the present invention.
It will be described based on.

The liquid container 10 of the embodiment shown in FIG. 1 has a flexible container body 12 and a hard mouth 14 projecting upward from the vessel body 12. 14 is integrally formed by blow molding.

As shown in FIG. 2, the container main body 12 is formed in a substantially square cross section, and four corners of the square form rib-shaped hard strips extending from the bottom wall 12A to the mouth 14. Vertical streaks 16 are formed. These vertical streaks 16 are formed so as to protrude somewhat outward from the surrounding portion by using a forming die partially provided with a groove when blow-molded. The vertical streaks 16 are formed using high-density polyethylene (HDPE) as a material.
Portions other than the vertical streaks 16 of the container body 12 are formed in a sheet shape using low-density polyethylene (LDPE) as a material. This sheet-like portion is much thinner than the vertical streak 16. Here, as the high-density polyethylene, for example, one having a density of more than 0.940 g / cc, preferably more than 0.940 g / cc and 0.98
g / cc or less, more preferably 0.945 g / cc or more.
0.97 g / cc can be used. Also,
As low-density polyethylene, the density is 0.940 g / cc.
Or less, preferably 0.90 g / cc to 0.940 g / c
c, more preferably 0.905 g / cc to 0.925 g
/ Cc can be used.

A substantially rectangular concave portion 18 is formed on the right side wall 12B of the container main body 12 in FIG. 1 and on the right side (rear right side in FIG. 1) of the side wall 12B (see FIG. 2). (In FIG. 1, the side wall 1 is formed.
Only the recess 18 formed in 2B is shown). The concave portion 18 is formed by providing an inwardly protruding portion in a part of a molding die during blow molding so that the side wall 12B molded at this portion protrudes inwardly. For this reason, as shown by phantom lines in FIGS.
The hands 8 and 18 can be gripped from both sides with hands 20, thereby improving the ease of handling when the user holds the liquid container 10.

The bottom wall 12A of the container body 12 has ribs 2 projecting upward from the center of the bottom wall 12A.
2 are formed. Thereby, the stability when the liquid container 10 is set up is improved.

The mouth portion 14 is formed in a substantially cylindrical shape, and a flange portion 14B having a hexagonal cross section is provided at an intermediate portion in the vertical direction (height direction). The mouth 14 is formed integrally with the container body 12 by blow molding. At this time, since the diameter of the mouth 14 is smaller than that of the container body 12, the mouth 14 is thicker than the container body 12. Therefore, the mouth portion 14 is formed so as to be hardened to some extent. Here, the mouth portion 14, the flange portion 14B and the average thickness in the vicinity thereof are preferably formed to be 1 to 4 mm, more preferably 1 to 3 mm, particularly preferably 1.2 mm to 2.5 mm, The average thickness of the container body 12 is preferably 0.1 mm to 1.5 mm.
mm, more preferably 0.2 mm to 1.0 mm, particularly preferably 0.3 mm to 0.7 mm, and the difference between them is preferably 0.2 mm or more, more preferably 0.5 mm or more. To be.

A male screw part 14A is formed on the outer periphery of the upper end of the mouth part 14, and a cap 30 as a hard lid member having a female screw part screwed to the male screw part 14A formed on the inner wall thereof. Screwed into the upper opening 24 of the mouth 14
Is opened and closed. The cap 30 is made of, for example, polypropylene or high-density polyethylene (HDP).
E). Here, as the high-density polyethylene, for example, the density is 0.940 g / cc as described above.
Greater than, preferably greater than 0.940 g / cc and less than or equal to 0.98 g / cc, more preferably 0.945 g / cc
g / cc to 0.97 g / cc can be used.

In the liquid container 10, as shown in FIG. 2, the vertical streaks 16 of the container main body and other portions are formed of different materials. The plastic tube is also integrally formed by blow molding using a parison in which a portion corresponding to the vertical streak 16 is made of high-density polyethylene and the other portion is made of low-density polyethylene. The liquid container 10 may be formed by injection blow molding or stretch blow molding.

As described above, since the liquid container 10 is mainly formed of low-density polyethylene, the weight is smaller than that of a conventional container formed of high-density polyethylene (HDPE).

According to the liquid container 10 of the present embodiment constructed as described above, since the mouth portion 14 is relatively hard and the flange portion 14B is formed in a hexagonal shape, the developing solution, the fixing solution and the like in the factory are provided. Can be smoothly performed. Further, since the mouth portion 14 is relatively hard and the flange portion 14B is easy to hold, the main body portion 12 (this portion is flexible except for the vertical streaks 16) is not twisted when the cap 30 is removed. For this reason, the liquid container 1
Inconveniences such as the liquid such as the processing liquid in 0 overflowing from the mouth 14 by mistake are unlikely to occur. In addition, since the liquid container 10 is characterized by having flexibility, liquid overflow during filling or use is more likely to occur on one side than a rigid conventional container, and the liquid filling rate is set to prevent this. It is desirably 95% or less, preferably 90% or less.

Further, since the liquid container 10 can be easily held by grasping the concave portions 18, 18 with the hand 20, the handling when the user pours the processing liquid into the processing tank is easy.

Further, as shown in FIG. 3, the liquid container 10 can be easily crushed by using the vertical streak 16 as a fold as shown in FIG. 3, so that the volume can be reduced. In this state, the vertical streaks 16 are deformed, making it difficult to restore the original shape. Furthermore, by tightly screwing the cap 30 in the crushed state, the internal negative pressure state is maintained, and the state after the volume reduction can be maintained. Therefore, the collection efficiency of the liquid container 10 discarded after use can be improved.

Further, since the liquid container 10 is formed in a soft sheet shape at portions other than the vertical streaks 16, the amount of synthetic resin used is limited to that of conventional high-density polyethylene (HDPE) and polyvinyl chloride resin (PVC). The amount of heat generated during incineration after discarding is reduced, which contributes to environmental conservation.

In the above embodiment, the vertical streak 16
Is formed from high-density polyethylene, and the other sheet-shaped portions are formed from low-density polyethylene. However, the present invention is not limited to this. However, it is only necessary that the material be made of a different material and have flexibility. Therefore, it is a matter of course that various resins can be used as constituent materials of these parts.

In the above-described embodiment, the case where the hexagonal flange portion 14B protruding outward is formed at the mouth portion 14 is exemplified. However, this flange is partially formed by a flat surface such as a square or an octagon. In this case, the flat surface can be easily held by a machine, so that the filling operation of a processing liquid such as a developer in a factory can be performed smoothly. Further, the mouth may be formed long without providing the flange portion, and the suitability for filling can be improved by forming the mouth portion into a hexagon, a square, an octagon, or the like.

Further, in the above embodiment, the handleability is improved when the liquid container is provided by forming a concave portion in the side wall of the container main body. Instead, a so-called low-density polyethylene is used for the handle. May be blow molded integrally with the container body.

In the above embodiment, the cap 3 is used as the lid member.
However, the present invention is not limited to this, and an inner lid 31 as shown in FIG. 4 may be employed as a lid member instead of the cap 30. Since the inner lid 31 can be formed of the same low-density polyethylene as the container 11, it is preferable not only in terms of production efficiency but also in the case of collecting and reusing the container. Further, a cap with an inner plug having a structure in which the inner lid 31 and the cap 30 are integrated may be provided. In this case, the inner plug can sufficiently secure the airtightness. It can be formed of the same low-density polyethylene as 11 and is preferable not only in terms of production efficiency as described above, but also in the case of collecting and reusing containers.

In the above-described embodiment, the case where the vertical streak portion 16 is integrally formed so as to divide the sheet-like portion of the side wall of the container main body 12 is illustrated. However, as shown in FIG. May be integrally formed in a state where the vertical streak portion 16 is joined to the outer surface of the sheet-like portion on the side wall of the container body 12. Alternatively, as shown in the cross-sectional view of FIG. 6, the vertical streak portion 16 may be integrally formed on the inner surface of the sheet-shaped portion of the side wall of the container body 12 in a state of being joined thereto. Alternatively, as shown in the cross-sectional view of FIG.
It may be integrally molded in a state of being embedded inside the sheet-like portion of the two side walls.

Next, a second embodiment of the present invention will be described with reference to FIGS. Liquid container 40 of this embodiment
Has a container body 42 and an opening 44 projecting upward from the container body 42, and the container body 42 and the opening 44 are integrally formed by blow molding.

The container body 42 has a substantially elliptical cross section as shown in FIG.
A pair of hard strips 4 having an arc-shaped cross section from 2A to the mouth 44
2B and 42C, and a pair of flexible portions 42D and 42E which are formed in an arcuate cross-section so as to connect between the hard strips 42B and 42C and are positioned diagonally in cross section. The hard strips 42B and 42C are hard portions made of high-density polyethylene (HDPE).
On the other hand, the flexible portions 42D and 42E are flexible portions made of low density polyethylene (LDPE). Here, as the high-density polyethylene, for example, the density is 0.940 g /
greater than cc, preferably greater than 0.940 g / cc and 0.98 g / cc or less, more preferably 0.9 g / cc or less.
Those having 45 g / cc to 0.97 g / cc can be used. Further, as the low-density polyethylene, a density of 0.
940 g / cc or less, preferably 0.90 g / cc or less
0.940 g / cc, more preferably 0.905 g / c
Those having c to 0.925 g / cc can be used.

A concave portion (not shown) is formed in the bottom wall 42A of the container main body 42.
Stability is improved when 0 is set. The bottom wall 42A is formed of the same low-density polyethylene as the flexible portions 42D and 42E.

In the container body 42, the hard strips 42B, 42C and the flexible sections 42D, 42E and the like are formed of different materials.
The part corresponding to C is made of high density polyethylene and the other part is integrally formed by blow molding using a parison made of low density polyethylene.

The mouth 14 has a substantially cylindrical shape, and an external thread 44A is formed on the outer periphery of the upper end thereof, as in the first embodiment.
The mouth portion 44B below the male screw 44A is long enough to hold this portion with a fingertip. This mouth 44
The same low-density polyethylene as the flexible portions 42D and 42E of the container body 42 is used as a material, and is formed integrally with the container body 42 by blow molding. It can be formed to be thicker than the main body 42, so that the mouth 44 is formed to be somewhat rigid.

The mouth 44 has a cap 30 made of polypropylene or high-density polyethylene (HDPE) having a female screw screwed into the male screw 14A formed on the inner wall thereof.
The same hard lid member (not shown) is screwed into the
4 is opened and closed.

According to the second embodiment constructed as described above, the same operation and effect as those of the first embodiment can be obtained. In addition, as shown by arrows A and B in FIG. By pressing the 42B and 42C from both sides, it is possible to more easily crush them. FIG. 10 shows the liquid container 40 in the crushed state.

In the case of the second embodiment, the container body 4
The outer cylinder may be formed by winding paper or the like around the side wall portion of the second case, thereby ensuring further stability when the container is erected.

The cross-sectional shape of the container main body is the first and second
The shape of the cross section of the container body is not limited to a square or an ellipse as described in the embodiment, but may be a polygon such as a hexagon or an octagon, or a circle. If the cross-sectional shape of the container body was hexagon shape, in the case of a to do this many packing, by arranging so-called honeycomb shape, it is possible to good packing efficiency.

In the above embodiment, the internal volume of the liquid container 10 is not explicitly described, but the present invention is not limited to the internal volume of several hundred milliliters to several liters (specifically, for example, 2 to 5 liters).
Liter).

In the above-described embodiment, the case where the liquid container according to the present invention is used to fill a processing solution used for developing the photosensitive material (this will be described later) has been described. It can also be used as a beverage container for filling other liquids such as various beverages.

As the photographic processing agent to be filled in the liquid container according to the present invention (hereinafter simply referred to as “the present invention is simply applied”), known processing agents can be used. Examples include a color developing solution, a black-and-white developing solution, a bleaching solution, a fixing solution, a bleach-fixing solution, an adjusting solution, and a stabilizing solution.

The color developing solution to which the present invention is applied is preferably an alkaline aqueous solution mainly containing an aromatic primary amine-based color developing agent. As the color developing agent,
Aminophenol compounds are also useful, but p-phenylenediamine compounds are preferably used, and typical examples thereof are 3-methyl-4-amino-N, N-diethylaniline and 3-methyl-4-amino-N -Ethyl-N-β
-Hydroxyethylaniline, 3-methyl-4-amino-N-ethyl-N-β-methanesulfonamidoethylaniline, 3-methyl-4-amino-N-ethyl-N-β
-Methoxyethylaniline and sulfates, hydrochlorides or p-toluenesulfonates thereof. These compounds can be used in combination of two or more depending on the purpose.

The color developing solution may be a pH buffer such as an alkali metal carbonate, borate or phosphate, a development inhibitor such as a bromide salt, an iodide salt, a benzimidazole, a benzothiazole or a mercapto compound. It generally contains an agent or an antifoggant. If necessary, hydroxylamine, diethylhydroxylamine, sulfite hydrazines, phenylsemicarbazide, triethanolamine, catecholsulfonic acid, and triethylenediamine (1,4-diazabicyclo [2,2,2] octane) Various preservatives, organic solvents such as ethylene glycol and diethylene glycol, quaternary ammonium salts, development accelerators such as amines, dye-forming couplers, competitive couplers, fogging agents such as sodium boron hydride, 1-phenyl- 3
-An auxiliary developing agent such as pyrazolidone, a viscosity-imparting agent, aminopolycarboxylic acid, aminopolyphosphonic acid, alkylphosphonic acid, various chelating agents represented by phosphonocarboxylic acid, for example, ethylenediaminetetraacetic acid, nitrilotriacetic acid , Diethylenetriaminepentaacetic acid, cyclohexanediaminetetraacetic acid, hydroxyethyliminodiacetic acid,
1-hydroxyethylidene-1,1-diphosphonic acid, nitrilo-N, N, N-trimethylenephosphonic acid, ethylenediamine-N, N, N ′, N′-tetramethylenephosphonic acid, ethylenediamine-di (o-hydroxyphenyl Acetic acid) and their salts.

The black-and-white developer used for the reversal process includes dihydroxybenzenes such as hydroquinone,
Known black-and-white developing agents such as 3-pyrazolidones such as -phenyl-3-pyrazolidone or aminophenols such as N-methyl-p-aminophenol can be used alone or in combination.

As the bleaching agent, for example, compounds of polyvalent metals such as iron (III), peracids and the like are used. Representative bleaching agents include organic complex salts of iron (III) such as aminoamines such as ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, cyclohexanediaminetetraacetic acid, methyliminodiacetic acid, 1,3-diaminopropanetetraacetic acid, and glycol ether diaminetetraacetic acid. Complex salts of polycarboxylic acids, persulfates and the like can be used. Further, the aminopolycarboxylic acid iron (III) complex salt is particularly useful in a bleaching solution and a bleach-fixing solution.

Examples of the fixing agent include thiosulfates, thiocyanates, thioether compounds, thioureas, a large amount of iodides, and the like, and thiosulfates are generally used. Ammonium sulfate can be used most widely. As the preservative of the bleach-fix solution, sulfites, bisulfites, sulfinic acids or carbonyl bisulfite adducts are preferable.

A typical example of a processing solution such as a color developing solution or a bleach-fixing solution to which the present invention is applied is described in "Photographic Industry Separate Volume, Latest Photographic Formulation Handbook" by Akira Sasai (Photographic Industry Publishing Co., Showa 58)
Issued on July 20, 2008).

Typical specific processing agents to which the present invention is applied include the following.

Examples of the color developing solution, bleaching solution, fixing solution and stabilizing solution for a color negative film are described in JP-A-4-359,24.
No. 9, especially the color developing replenisher, bleach replenisher, fixing replenisher and stabilizer N described in Example 1.
o. 18 can be used. These may be stored in a container as they are, or may be concentrated and stored.
For example, the above-mentioned stabilizing solution No. 18 may be concentrated 100 times.

Examples of the color developing solution and bleach-fixing solution for color paper include those described in JP-A-4-195,037, particularly the working examples, especially the color developing replenisher described in Example 2, bleach-fixing. Replenishers can each be used.

Examples of the direct color developing solution, bleach-fixing solution and washing water for positive color light-sensitive materials include color developing replenishers described in JP-A-1-93,739 (Examples, particularly described in Example 2). Color developing replenisher), JP-A-2-50,
No. 157 described in JP-A-157-157 (Examples, particularly the color developing replenisher of Example 4, especially CD-2).
0), the color developing replenisher described in JP-A-2-91,642 (Example, especially the color developing replenisher of Example 1, especially No. 6), JP-A-3-13,941 The bleach-fixing solution described in the official gazette (the bleach-fixing solution of the example, particularly the bleach-fixing solution of the example 1) and the washing water described in JP-A-3-13,941, particularly the one described in the example 1 are used. Each can be used. These treatment liquids may be stored in the container as they are, or may be concentrated and stored.

[0047]

As described above, according to the present invention,
There is an unprecedented excellent effect that the volume can be easily reduced after use without impairing the user's ease of use.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a liquid container according to a first embodiment of the present invention together with a cap.

FIG. 2 is a cross-sectional view passing through a concave portion of the liquid container of FIG.

FIG. 3 is a perspective view showing a state in which the liquid container of FIG. 1 is crushed and reduced in volume.

FIG. 4 is a front view of a mouth partly broken to show the inner lid.

FIG. 5 is a schematic cross-sectional view of a liquid container according to a modification of the first embodiment.

FIG. 6 is a schematic cross-sectional view of a liquid container according to another modification of the first embodiment.

FIG. 7 is a schematic cross-sectional view of a liquid container according to another modification of the first embodiment.

FIG. 8 is a perspective view showing a liquid container according to a second embodiment of the present invention.

FIG. 9 is a sectional view taken along line 9-9 of FIG. 8;

FIG. 10 is a perspective view showing a state where the liquid container of FIG. 8 is crushed and reduced in volume.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Liquid container 12 Container main body 14 Mouth 16 Vertical streak (hard strip) 30 Cap (lid member) 40 Liquid container 42 Container main body 44 Mouth 42B Hard strip 42C Hard strip

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Takahiko Funabashi 1-3-1 Uchisaiwaicho, Chiyoda-ku, Tokyo Tokan Kogyo Co., Ltd. Tokan Kogyo Co., Ltd. (56) References JP-A-63-191773 (JP, A) JP-A-63-99815 (JP, U) JP-A-6-507597 (JP, A) JP-A-3-505717 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65D 1/00 B65D 1/02 B65D 1/48 G03D 13/02

Claims (1)

(57) [Claims] 1. A liquid container having a container main body and a hard mouth protruding upward from the container main body, wherein the mouth is opened and closed by a lid member engaged with the liquid main body. The body extends from the mouth to the bottom of the container body.
A plurality of hard ridges formed at a predetermined distance from each other and a lower end of the hard ridges and another portion having flexibility made of a different material from the hard ridges; And the container body is integrally formed by blow molding.